def bmi(height, weight):
    print("Hello, I am BMI calculator")
    bmi = weight / (height ** 2)
    print("Your BMI is:", bmi)
    if bmi < 18.5:
        print("You are underweight")
    elif bmi < 25:
        print("You are normal weight")
    elif bmi < 30:
        print("You are overweight")
    return bmi